Safety gas fitting



May 27,1930;

0. SCHWIMMER 1,759,872 SAFETY GA'S FITTING Filed Jan. 11 1927 sum-F ATTORNEYS.

l atentecl 1. I it osoim:scHwrn/nvrma, or tosaianontns, -cxmronma w 7 ISAFETY oAs rrr'rrNei, V i Application filed January .11,- i 92 h SerialN :160,l322 l V V This invention relates to gashosescocks, v and likefittings adapted to be connected to v v with corrugations so that theconnector C- will obtain a good gr p -ther'eon; K' ta'pered"'openingvext ends acrossth'e' bore and is arranged to receive atapered' rdtary core 8' ha-vhose orpipe, and pertains more particularlyto a safety connection which automatically 5 shuts olt the flow ofgasupon removal of the hose'or pipe from the fitting a Itjis commonpractice to provide gas hose rocks with tubular Outlets or nozzlesadapted to have flexible hosesattached thereto. The

Y 19 current practice istosecure a sleevelike rubberjconnector to thehose which connector is slipped overthe nozzle and held in position byits grip upon the latter- Accidental disconnection whichcan occur in avariety of 1 ways will cause the discharge of gas through an open cockinto the air. In the case of gas heaters for residences, many deaths byasphyxiation as a resultofaccidentaldisplacement and disconnectionotlhoses have reobject the provision'of a hose-cock which willautomatically closeuponremoval of theconnector. In addition to thebroader objects of this invention there are certain details of designwhereb a simple,economical, durable structure, easi y installed, and notsubject to Y tampering with is obtained 1- I 1 These objects togetherwith other ob ects and corresponding accomplishments are obtained bymeans of the embodiment of my invent-ion illustrated e in, theaccompanying drawing, 1n which; 7

Fig. 1 is a vertical section through a service cock with parts shown inelevation, at trag- 3 'n1entof of the service hosewith' its rubberconnector beingshown; Fig. 2 is a perspective view'showing the seatbushing and- Fig. "3 is a perspective view of the actuating memher formaintaining the'ba'llofiits seat.

' Referring with moreparticularityto the drawing, A indicates a pipeforming apart of the house service system, It is externally threaded atthe end and mounted thereon is the hose cock 1B. Mounted over the nozzleof the hose cockis arubber connector C which is secured to afiexibleghose D; leading to the device to be supplied with gas The hosecock comprises a body 5 having a passage extending therethroughtroin thetubularinlet 6 tothefnozzl'ef'r". The inlet 6 is E-iuctnre j u-st Tdescribed is "that memo- 1 i for devicesof'this character f summer 10,and 'atthei sulted. This invention hasfor its "primary" 7 will likewisebedisplaced and the ball 14mm;

internally threaded so as to be attachedtothe I pipe The nozzlepreferably provided ing a bo're 9, whammy be registeredwith'the passagefrom thejfinlet to the r'io'zzle. i. The

.Theflnoz'zle ihasafb'ore provided-wt V 1' end is-inter ila y;threadedasindicatedby 1 secuiied inft lie bore of the nozzle i'sthe seatbushinigl haw ball 14 is disposed within thebore ofthe noz .1

zle and is ofsuch diameter that gas may pass I around'it, but it it isseated upon the bushing 12, it will stop the flow of gas; Back of theball 14 is a compression spring 15 tending to force the ball upon itsseat. It the ballis not held from its seat, the passage of gas throughthe cock would be prevented. I have therefore provided an actuatingmember. I This comprises a tubular stem 16 having a disk head 17 of suchdiameter that it will be gripped bythe connector C; Lateral ports 18 areprovided in the stem. When the stem is positioned in the nozzle, withthe head 17 passaround the ball and through the cock in the usualmanner. I It will be noted that the v stem 16 is beveled on its innerend tofit the ball; Thus when the ball is held offits seat, r theportion in contact with this stem will be protected from any deposit oftar or gummy substance in the gas. As there is no tendency for theballtoturn, this clean surface winal Ways contact with the seat, upontheactuat- 2 ing memberbeing removed, and insure a tight closure. The fitbetweenthe stem16 and the bore of the bushing 12 is free so that if theconnector is displaced, theactuating'member seat so as to close thecock. I

ing kerfsonthejouterend to provide" a holcl for placmg' the-seatinposition or removing

